Firstly it wasn’t a mantorville that I received but a Abington,having said that it looked identical so we started to assemble it, we have put together furniture for years so we are pretty good at it so I know it was not us doing it wrong plus hubby is a engineer (thankfully) cabinet was abysmal, doors are like painted cardboard and drawer runners were totally out of line with one drawer so bad I didn’t think it was recoverable.it took about 2 hours of re alignment by hubby (he hates to be beaten by these things) and it now looks ok. I personally would have sent it back but for£99 decided it was easier to keep.
If your not good at assembling things give it a miss